Use /var instead of /root as SSL scratch directory
Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=877400
Description of problem:
katello-configure (rather, the "certs::config" class) uses /root/ssl-build as a scratch directory to store lots of SSL data. It contains OpenSSL configs, keys, certs, serials etc., generated by install steps in the class.
This data should move to /var/lib/katello or similar, so it follows the FHS. Under /root it's in danger of not being backed up.
Version-Release number of selected component (if applicable):
1.1, confirmed in git master.
Steps to Reproduce:
1. install katello
2. run katello-configure
3. check /root/ssl-build